HP R3030EA, R3065US, R3070US, R3060US, R3050US, R3001 Preventing Electrostatic Damage, Plastic Parts

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Removal and Replacement Preliminaries

Plastic Parts

Using excessive force during disassembly and reassembly can damage plastic parts. Use care when handling the plastic parts. Apply pressure only at the points designated in the maintenance instructions.

Cables and Connectors

Cables must be handled with extreme care to avoid damage. Apply only the tension required to unseat or seat the cables during removal and insertion. Handle cables by the connector whenever possible. In all cases, avoid bending, twisting, or tearing cables. Ensure that cables are routed in such a way that they cannot be caught or snagged by parts being removed or replaced. Handle flex cables with extreme care; these cables tear easily.

ÄCAUTION: When servicing the Expansion Base, ensure that cables are placed in their proper locations during the reassembly process. Improper cable placement can damage the Expansion Base.

4.3Preventing Electrostatic Damage

Many electronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure determine the degree of sensitivity. Networks built into many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions.

A sudden discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs.

An electronic device exposed to electrostatic discharge might not be affected at all and can work perfectly throughout a normal cycle. Or the device might function normally for a while, and then degrade in the internal layers, reducing its life expectancy.

4–2

Maintenance and Service Guide

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Contents Maintenance and Service Guide Page Contents Screw Listing Index Product Description Features External Components Component Function Front ComponentsRight-Side Components Rear components Rear Panel Components Left-Side Components Wireless Accessories Wireless AccessoriesDesign Overview Before Replacing Parts TroubleshootingPower Problems and Solutions Problems and SolutionsProblem Possible Cause Solution External Device Problems and Solutions Serial Number Location Illustrated Parts CatalogHP Notebook Expansion Base Major Components Description Number Spare PartHP Notebook Expansion Base miscellaneous components Receiver Item Description Number Power cordService Considerations Removal and Replacement PreliminariesTools Required Plastic Parts Preventing Electrostatic DamagePackaging and Transporting Precautions Workstation Precautions Grounding Equipment and Methods Static-Shielding Materials Typical Electrostatic Voltage LevelsEvent 10% 40% 55% Material Use Voltage Protection LevelRemoval and Replacement Procedures Serial Number Disassembly Sequence Chart Disassembly Sequence Chart# of Screws Section Description RemovedPreparing the HP Notebook Expansion Base for Disassembly Spare Part Number Information Base PlateUpper Chassis Removing the rear cover Disconnecting the cables from the system board Reverse the above procedure to install the upper chassis Power Supply Reverse the above procedure to install the power supply System Board Reverse the above procedure to install the system board Front Tray Cover Reverse the above procedure to install the front tray cover Back Panel Expansion Cable Speaker Assembly Reverse the above procedure to install the speaker assembly Front Case HP Notebook Expansion Base SpecificationsInternal AC Adapter Power supplyTable A-1 RJ-45 Network Interface Connector Pin AssignmentsTable A-3 Universal Serial Bus Table A-2 RJ-11 ModemTable A-5 Audio Line-Out Table A-4 VideoTable A-6 Serial Table A-8 Table A-7 Pdif Audio Line-OutConductor Power Cord Set Power Cord Set RequirementsGeneral Requirements Country-Specific Requirements Conductor Power Cord Set RequirementsApplicable Note Country Accredited Agency NumberBSI Screw Listing Head Table C-1 Phillips PM2.5×17.0 ScrewColor Qty Length Thread Width Table C-2 Phillips PM2.0×6.0 Screw Table C-2 Phillips PM2.0×6.0 Screw Table C-2 Table C-4 HM5.0×9.0 Standoff Table C-5 Phillips PM2.0×4.0 Screw Table C-5 Phillips PM2.0x4.0 Screw Table C-5 Phillips PM2.0×4.0 Screw Table C-5 Phillips PM2.0×4.0 Screw Table C-5 Phillips PM2.0×4.0 Screw Table C-6 Phillips PM2.0×2.0 Screw Index Index Maintenance and Service Guide Index-3
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